In this book, trigonometry is presented mainly through the solution of
specific problems. The problems are meant to help the reader consolidate
their knowledge of the subject. In addition, they serve to motivate and
provide context for the concepts, definitions, and results as they are
presented. In this way, it enables a more active mastery of the subject,
directly linking the results of the theory with their applications. Some
historical notes are also embedded in selected chapters.
The problems in the book are selected from a variety of disciplines,
such as physics, medicine, architecture, and so on. They include solving
triangles, trigonometric equations, and their applications. Taken
together, the problems cover the entirety of material contained in a
standard trigonometry course which is studied in high school and
college.
We have also added some interesting, in our opinion, entertainment
problems. To solve them, no special knowledge is required. While they
are not directly related to the subject of the book, they reflect its
spirit and contribute to a more lighthearted reading of the material.